Method and apparatus for displaying a cursor along a two dimensional representation of a computer generated three dimensional surface
US5577176A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1994 |
| Grant date | Nov 19, 1996 |
| Priority date | — |
| Expiry date | Nov 23, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/04812
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A cursor is dynamically attached to a two-dimensional representation of a three-dimensional surface in a CAD system. The system maps input coordinates indicating an initial position and a final position of a cursor to coordinates of a u-v surface representation of a the three-dimensional surface. The u-v coordinates are then mapped to display coordinates. The option to display this cursor on the surface is made by entering a command and by selecting a surface. The cursor preferably includes vectors indicating the magnitude and direction of the slope, and the display includes a window for displaying the u-v representation of the surface. A user can pick points on the surface based on what is visually observed on the display without projecting the point to another surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.